# If an Angle is its Own Complementary Angle, then its Measure is

**Answer: (2) 45 degree**

**Explanation:-**

Let the angle be X.

According to the question,

90 – X = Complementary angle

90 – X = X

90 = X + X

2 X = 90

X = 90/2

X = 45 degree

Hence, the answer is (2) 45 degree.